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args.c
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args.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* args.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dlancar <dlancar@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2016/01/05 14:46:35 by dlancar #+# #+# */
/* Updated: 2017/01/24 17:58:59 by dlancar ### ########.fr */
/* */
/* ************************************************************************** */
#include "args.h"
#include "ftstring.h"
#include "ftio.h"
static const t_option *get_option(const t_option *options, const char *option)
{
int i;
int j;
const t_option *res;
char *name;
i = 0;
while (true)
{
res = &options[i];
if (res->names == NULL)
return (NULL);
j = 0;
while ((name = res->names[j]))
{
if (ft_strcmp(name, option) == 0)
return (res);
j++;
}
i++;
}
return (NULL);
}
int options(const t_option *options, int argc,
const char **argv, void *data)
{
const t_option *opt;
int i;
i = 1;
while (i < argc)
{
if (argv[i][0] != '-' || (argv[i][0] == '-' && argv[i][1] == '-'))
return (i);
opt = get_option(options, &argv[i][1]);
if (opt == NULL)
{
ft_printf_fd(STDERR_FILENO, "Unknow option: %s\n", argv[i]);
return (-1);
}
if (i + opt->args_n >= argc
|| (opt->validate && opt->validate(&argv[i], data) == false))
{
ft_printf_fd(2, "%s\n", opt->usage ? opt->usage : "Invalid option");
return (-1);
}
if (opt->callback)
opt->callback(&argv[i], data);
i += 1 + opt->args_n;
}
return (i);
}